Speed shaft



Patented Sept. 9, 1924.

narran states natuur cruise.

SIDNEY R. COOPER, OF CHICAYGOQILLINOIS, ASSIGNOR T U. BALL BEARNG MANU- FACTURING COMPANY, OF CHICAGO, .7ILLINOIS, A' CORPORATION 0F ILLINOIS.

l srrmn sn'far'r'.

- Application mea August 5, 1921. serial itu. teasaa.

bearing and Figure 2 is a fra mentary per- 15 spective of the ends of the sha ts and fiexlble coupling therefor.

This invention is embodied in a construction havin a shaft 10, the center ofwhich is enlarge and supported byball bearings 2o 12 and, 13 which are preferably of the combined radial and thrust type and which areJ carried by the housing 14. Said center has a central cylindrical surface a and tapered cndsvor inclined surfaces 10" leading thereto.l

The ball bearing12 has inner and outer race members'l and 16, respectively. The inner race member is retained against a shoulder l11a by means of the lock nuts 17 While the outer race member 16 is retained means of thenut 18. The bearing12 is so arranged that it takes a thrust in one direc# tion onl namely, from the left-hand end of the sha as shown in Figure 1.A

The bearing 13 hassim-ilarly arranged inner and outer race members wand 2 0,- respectively, the innerrace member being SQ- cured on the shaft b means of lock nuts 21. The outer race mem er 20, however, is slidably mounted in the hollow casing 14andis constantly pressed outwardly by means of springs 22` which are preferably secured in openings in the hollow member 23 which in t Ae-invention as broadlyas lpossible in makes contact with a hollowv member 24.

The shaft 10,l as shown at the. left-hand side of Figure 2, is provided with a transverse -slot' 25' in which is adapted to slide the key 26 formed on one side of the coupling27. A similar key 28 is formed on the op osite side of this coupling and at right ang es to' the key 26 and is slidably mounted in the ke -way 29 of the drivin shaft.

his shaft is journals to maintain the shafts-'10"and 30 substantial# R. CooPnR,

against a shoulder in the housing 14 by;l

modifications.

in suitable bear ings' as 31 and 32 which are so mounted as.

center and ousing.

ly in alignment. lThe shaft30 may be driven in any suitable manner, as by. means of the pulle 33. g.

The ho low members 23 and 24 are formed so as to leave but a small clearancea'bout ce,I

the enlargement 11 of the shaft 10. Spiral l oill grooves 1lh in Qppositely directed relation are formed atthetwo endsof this enlargement so' as to feed oil from points near the bearings 12' and 13 toward the internal roove 34. The surplus of oil in this groove s l 1s returned to points near-the bearings thru gle opening 35 and the passages 36, 37 and The outer end of the shaft 10 carries a grinding'wheel 39 or other small tool. It.

will be apparent from the fore 0in that the shaft 10 will be greatly steadled y the enlargement -11 which will act as a fly-wheel and by the film of oil between the enlargement 11 and the hollow members 23 and 24.

Much of the vibration of a high-'speed shaft is due to the fact that it is connected direct;v ly .to the pulley which drives it and all vibration dueto the -belt .is accordingly trans-A mitted tothe speed shaft. This -is eliminated by sepa-rating the drivingpulley sfro-m the? speed ,shaft by Ameans of the flexible coupling. The even running of the shaft is alsoand 13 which take a'thrust in op osite di-v rections and which are maintainel under a vuniform rassure by 'means of the s rin s 22.:4

il bed guna I While lhave shown and descri single embodiment of my invention, it is to be understood that it is`capable of many' Changes, therefore, in the construction and arrangement may be made which` do not depart from the spirit and 1vscope of the lappended claims in which it ism intention to cover all novelty inherent view of the prior art.

lI claim:

.1. 1n combination, a shaft having an en- 'of and independent of/said enlarged center,

a housing closelywy surrounding` said center whereby an oil lm may be maintained. be-

oves on said center' larged center, 4a 'radial bearing on each side f l 'said cylindrical surface and ta red sur-A may lbe maintained betivccn the center and housing to steady the shatt.

3.l lin 'combinatnm a shaft having kan enl-ar center, said center having a cylindrical surface and substantiallyV tapered surfaces leeg thereto, said center having o f positely directed spiral grooves yopen at tde respective tapered 'surfaces for the conduct of oil, a housing 'surrounding said center provided vvith means in bearing relation to faces, and radial bearings associated with the shaft adjacent .opposite ends of said centeru v d. lln combination, a shaft having an enlarged center, said center having a cylindrical surface and substantially ltaperedsurfaces leading thereto, said center having oppositely directed spiral grooves open at the respective tapered surfaces for the conduct of oil, a housing surrounding said center provided with means in bearing relation to said cylindrical surface and tapered surfaces, and radial'bearings carried b the housing and associated with the sha c advacent opposite ends of said center, said arin being independent of said center and .said means.

5. lin combination, a shaft provided with' ing oppositely directed spiral grooves open at the respective end portions for the con-` duct of oil, hollow members subject to longitudinal thrust and abutting each other'attheir e ends and arranged in bearing cont vn h said center, andradial bearings in cross sectional area toward the ends of the shaft, said center hav.-

for the shaft adjacent the outer vends.

- said members,

rected spiral grooves open at the respective tapered surfaces for the conduct of oil, hollovv members arranged in bearin contact vvithsaid cylindrical surface an tapered surfaces, said hollovv members abutting each other at their inner ends, one of said hollow s members adjacent said ends having an oil groove surrounding said surface, radial bearings for the shaft adjacent the opposite ends of said center, a housingcarryin said hollow mbers and bearings provide vvith an oil passage in counication with the last mentioned 'groove and open adjacent each bearing.

7. lin combination, a shaft, radial bearings therefor, said shaft 'having an enlarged center intermediate said bearings providi'fg a cylindrical surface and substantially tapered surfaces leading thereto, said, center having oppositely directed spiral grooves o en at the respective tapered surfaces for t e conduct of oi hollow members abutting each other .at their inner ends arranged in bearing Contact with said cylindrical surface s and tapered surfaces, one of sald hollow "members abut one of the bearin means engaging the other of said holljovv members and the other bearing to subject said hollow members to longitudlnal thrust, one of said hollow members adjacent the said ends hav- 1n drical surface, and a housing carrying mid an oil ve surrounding said cylin' e bearings and, said members, said housing 4 having an oil passage in communication with the last mentioned groove and open adjacent each bearing,

. SEIDNEY )Rt @@fDPlilt. 

